Home / 66,548.12-99,809.10-19,790.60

Finding the Fourth Proportional to 66,548.12, 99,809.10 and 19,790.60

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Solution

The fourth proportional to 66,548.12, 99,809.10 and 19,790.60 is: 29,682.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,548.12 : 99,809.10 = 19,790.60 : x
  2. Step 2: Convert to fraction form
    66,548.12/99,809.10 = 19,790.60/x
  3. Step 3: Cross multiply
    66,548.12x = 99,809.10 × 19,790.60
  4. Step 4: Simplify right side
    66,548.12x = 1,975,281,974.46
  5. Step 5: Solve for x
    x = 1,975,281,974.46/66,548.12
  6. Step 6: Final answer
    x = 29,682.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.